Preferred Air Inc. has been servicing homes on the North Shore of the Boston area since 1991. We have earned a community-wide reputation for honesty, professionalism, and courteous service. Our company prides itself on using leading technologies in the field. There is more to your heating and cooling system than just heating and cooling. We will help you get the most from your existing system in comfort, safety, and energy savings. Our service technicians are factory-trained and on call 24 hours a day. Preferred Air Inc. also offers a Full Service Sheet Metal Department, including a custom duct fabrication division. We do complete design build jobs and offer engineering services to meet your needs.